Railway-car underframe.



P. MfBEARD.

RAILWAY CAR UNDERFRANIE.

APPLlVcATloN FILED Aua.4. 1915.

Patented 1190.111915.

2 SHEETS-SHEET I.

fnvenfnz" PauMeaz'd Af-97N M Ail?,

COLUMBIA PLANQGRAPH co1. WASHING-ron. u. c.

P. M. BEARD RAILWAY CAR UNDERFRANIE.

APPLICATION FILED Aue.4. 1915,

Patented Dec. 14, 1915.

narran erariale naam-air its.

RAUL M. ERARD, OF ST. LGUIS, MISSOURI, ASSIGEQR- TO MERCN CABAND FUNDRY COMBANY, 0F ST. LOUIS, MSSOURI, A CORPORATION OE NEVI JERSEY.

RAILtVAY-CAE UNDERFRAME.

Speccaton of Letters` Eatent. j

Patented Dec. te, mit?.

Application ledAugust 4 1915. Serial No. 43,603.

To all wlw/m. t may Concern Be it known that l, PAUL M. Bimini), residing at St. Louis, Missouri, and being: a citizen, of the 'United States, have invented certain new and useful improvements in Railway-Car Underframes, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which illustrate the preferred form of the invention, though it is to be understood that the invention is not limited to the exact details of construction shown and described, asV it Y,is obvious that various modifications thereof will occur to persons-skilled in the art. Y

in said drawings:` Figure l is a plan view of a part o f a center sill construction adjacent the bolster, part of the figure being in section along line l-l of Fig. 2. Fig. la is a. detached diagrammatic view showing a part of a rectangular plate, such as iseinployed in the, fabrication of the web of a sill,.of fish-belly form, like that shown in the drawings. Fig. 2 is a side elevational view of the structure shown in Fig. l. Fig. 3 indi-r cates a transverse sectional view, the section being taken on line 3.-.3 of Fig. 2. Fig. le is a diagrammatic plan view of one half of a car underframe, of the type to which the sills of the present application may be applied. Fig. is aside elevational view of a modified sill in which the web and its reinforcement, hereinafter referred to, extend to the end sill, the end sill not being shown. Figs. G, 7 and 8 are sectional views, the seotions being taken respectively on lines @w 7-7 and 8 8 of Fig. 5.

Referring to the parts l indicates the center sill web having a flange 2 at the top, which flangel is shown as integral with the web in Figs. l, 2 and 3, and comprises a separately formed attached angle in Figs. 5, 6 and 7. To the top iiange 2 is secured the usualcover plate 3.

4 and 5 indicate respectively bottom chord angles, secured to the inner and outer faces of the' webs l ofthe center sills, and said chord angles terminate intermediate the' bolsters, and between the bolsters and the end sills respectively, it being understood of course that there is employed in the underframe two bolsters, one near either end of the car.

y in various parts of the car.

7 vindicates a cross beam or cross bearer Ypassing transversely through the web l of the center sill, and being connected thereto by castings 8 provided with integral flanges 8a, conforming in general to the contour of the flanged side of the cross beam, and being also connected to the stiffening members 9, which in the present instance are of angle formationin cross section.

lO-is a flanged reinforced casting, which serves as a connecting member between the holsters and the center sills, said casting being provided with connected passages of the contour of the bolster B projected therethrough, as best shown in Figs. l and 2.

The centerysill web in the present invention is formed from a rectangular plate of metal, the end portion of which plate is shown in Fig. le. The accepted method of forming the .web of a fish-belly sill from such a plate, is by making two cuts at each end, one Vcut extending parallel with the top of the plate, as shown along the line at of Fig. l, and one cut extending` diagonally from the inner end of said first cut a to the bottom of the plate along the line b in said Fig. la. These cuts shape the web plate as shown in Fig. 2, and sever from said web plate a piece of metal of the shape indicated atll in said Fig. la.

@rdinarily the piece of metal ll would not be employed as a part of a center sill, but would be thrown into the c-scrap to be utilized as far as might be found conveniently practicable in the manufacture of small parts such as plates and gussets to be used Such practice results in a considerable waste of material, and at best the parts cut from such scrap are as costly as if cut from plates of a larger size. ln the present construction the piece l1, severed from the web, as above indicated, is used as shown in the drawings to reinforce the center sill web at and adjacent the bolster. In the sill produced in accordance with the present invention, the web section of each sill at the bolster is thus doubled. while intermediate the bolster, as the depth. of the girder increases. the depth Vof the reinforcement decreases in approxierly riveted together, possesses a uniform strength from end to end.

'.l`he`construction shown in Figs. 1 and 2 is of the type in which draft sills 12 are spliced to the end portions of the center sills,

between the bolster and the end sill byV means of rivets 13. Ordinarily the center sill webs would be too thin to provide ade-` quate bearing for these rivets, and to compensate for this, it has been customary to supply splice plates, generally of rectangular form within the Zone of rivet connection, thus adding metal which is expensive, and weight which it is undesirable to carry. To extend such plates between the holsters for any considerable distance, would result in unnecessary material between the bolsters. rlhe employment of the piece 11 as indicated, doubles the rivet bearingarea used to secure the draft sills in position, and gives the wanted thickness of metal at and near the bolster, without using unnecessary metal at other points.

F ig. 5 illustrates a type of construction in whichv the center sill web extends to the end sill of a car, and such extension of the center sill web is employed as a draft sill. Ordinarily this construction would resultin a weak draftsill or an overstrong center sill between the bolsters, as the thickness of the web is necessarily uniform from end to end, but byutilizing apart cut away, as has been indicated, and as shown in Fig. la, sufficient metal is obtained in the vicinity of the bol-V sters,.without adding any surplus metal be-V tween the bolsters.

`Another feature of the invention contem-v rectly to the flange 15 and is also connected vmetal extension of a structural steel member .and eliminates undesirable` riveting through the draft lugs,'without sacrificing efficiency as would be the case if the angle 5 continued to the end sill, secured only by such rivets as could be conveniently inserted through the draft lug. Y

What I claim as my invention is: Y

' 1.111 a car underframe, a fish bellyv sill comprising a web portionof greater depth near its middle than near its ends and a reinforce plate paralleling and being riveted to said web, said plate being of substantially uniform depthfor a portion of its length and of gradually reduced depth for another portion of its length, the reduced portion lapping a portion of the sill web which is of gradually increasing depth.

, 2. In combination in a car sill, a web portion shallow near itsends and deeper near the middle of: its length, in combination with a vreinforce plate paralleling said web portion and being of lessening depth near the deeper portion of the web and therese-` cured to said web, and a draft lug secured to said web and plate by through rivets which secure the web and platestogether.

3. In combination in a car sill, a web portion deeper at its middle portion than in its end portions, a bottom chord member se- Y cured to said web, a draft lug having a bottom flange lapping said bottom chord and being secured thereto, a reinforce plate paralleling said web within the Zone of said draft lug and through rivets connecting said web, reinforce plateand draft lug.

In witness whereof ,I have hereunto set Y my hand. Y

` PAUL M. BEARD.

i Copies of this patent may be obtained fcr ve cents each, by addressing the Commissioner of Patents.

, Wasnington, D. C. 1 

